Largely enhanced photocatalytic hydrogen production rate of CdS/(Au–ReS2) nanospheres by the dielectric–plasmon hybrid antenna effect

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19586-19594 ◽  
Author(s):  
Jia Liu ◽  
Kai Chen ◽  
Gui-Ming Pan ◽  
Zhi-Jun Luo ◽  
Ying Xie ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Production Rate ◽  
Hydrogen Production Rate ◽  
Antenna Effect ◽  
Photocatalytic Hydrogen Production ◽  
Highly Efficient ◽  
Production Activity

CdS/(Au–ReS2) nanospheres that have highly efficient photocatalytic hydrogen production activity induced by dielectric–plasmon hybrid antenna resonance are synthesized.

scholarly journals Upcycling of Wastewater via Effective Photocatalytic Hydrogen Production Using MnO2 Nanoparticles—Decorated Activated Carbon Nanoflakes

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1610 ◽  
Author(s):  
Sankar Sekar ◽  
Sejoon Lee ◽  
Preethi Vijayarengan ◽  
Kaliyappan Mohan Kalirajan ◽  
Thirumavalavan Santhakumar ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Hydrogen Production ◽  
Pure Water ◽  
High Specific Surface Area ◽  
Hydrogen Production Rate ◽  
High Hydrogen ◽  
Photocatalytic Hydrogen Production ◽  
Mno2 Nanoparticles ◽  
Production Activity

In the present work, we demonstrated the upcycling technique of effective wastewater treatment via photocatalytic hydrogen production by using the nanocomposites of manganese oxide-decorated activated carbon (MnO2-AC). The nanocomposites were sonochemically synthesized in pure water by utilizing MnO2 nanoparticles and AC nanoflakes that had been prepared through green routes using the extracts of Brassica oleracea and Azadirachta indica, respectively. MnO2-AC nanocomposites were confirmed to exist in the form of nanopebbles with a high specific surface area of ~109 m2/g. When using the MnO2-AC nanocomposites as a photocatalyst for the wastewater treatment, they exhibited highly efficient hydrogen production activity. Namely, the high hydrogen production rate (395 mL/h) was achieved when splitting the synthetic sulphide effluent (S2− = 0.2 M) via the photocatalytic reaction by using MnO2-AC. The results stand for the excellent energy-conversion capability of the MnO2-AC nanocomposites, particularly, for photocatalytic splitting of hydrogen from sulphide wastewater.

Hydrothermal synthesis of a uniform sub-micrometer-spherical Zn0.83Cd0.17S photocatalyst with high activity for photocatalytic hydrogen production

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 51997-52003 ◽  
Author(s):  
Zhongping Yao ◽  
Yaqiong He ◽  
Qixing Xia ◽  
Han Wei ◽  
Zhaohua Jiang
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Hydrogen Production ◽  
High Activity ◽  
Production Rate ◽  
High Photocatalytic Activity ◽  
Hydrogen Production Rate ◽  
Hydrothermal Temperature ◽  
Photocatalytic Hydrogen Production

A series of Zn0.83Cd0.17S with high photocatalytic activity was hydrothermally synthesized, the best hydrogen production rate of 45.97 mmol h−1 g−1 was obtained when the hydrothermal temperature was 160 °​C and the dosage was 0.03 g.

Photocatalytic hydrogen production of the CdS/TiO2-WO3 ternary hybrid under visible light irradiation

2015 ◽  
Vol 73 (7) ◽  
pp. 1667-1672 ◽  
Author(s):  
Yi-Lin Chen ◽  
Shang-Lien Lo ◽  
Hsiang-Ling Chang ◽  
Hsiao-Mei Yeh ◽  
Liping Sun ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Production Rate ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Platinum Metal ◽  
Light Irradiation ◽  
Hydrogen Energy ◽  
Hydrogen Production Rate ◽  
Photocatalytic Hydrogen Production

An attractive and effective method for converting solar energy into clean and renewable hydrogen energy is photocatalytic water splitting over semiconductors. The study aimed at utilizing organic sacrificial agents in water, modeled by formic acid, in combination with visible light driven photocatalysts to produce hydrogen with high efficiencies. The photocatalytic hydrogen production of cadmium sulfide (CdS)/titanate nanotubes (TNTs) binary hybrid with specific CdS content was investigated. After visible light irradiation for 3 h, the hydrogen production rate of 25 wt% CdS/TNT achieved 179.35 μmol·h−1. Thanks to the two-step process, CdS/TNTs-WO3 ternary hybrid can better promote the efficiency of water splitting compared with CdS/TNTs binary hybrid. The hydrogen production of 25 wt% CdS/TNTs-WO3 achieved 212.68 μmol·h−1, under the same condition. Coating of platinum metal onto the WO3 could further promote the reaction. Results showed that 0.2 g 0.1 wt% Pt/WO3 + 0.2 g 25 wt% CdS/TNTs had the best hydrogen production rate of 428.43 μmol·h−1. The resultant materials were well characterized by high-resolution transmission electron microscope, X-ray diffraction, scanning electron microscopy, and UV-Vis spectra.

scholarly journals Enhanced hydrogen production of Rhodobacter sphaeroides promoted by extracellular H+ of Halobacterium salinarum

2021 ◽  
Vol 71 (1) ◽  
Author(s):  
Jiang-Yu Ye ◽  
Yue Pan ◽  
Yong Wang ◽  
Yi-Chao Wang
Keyword(s):  
Hydrogen Production ◽  
Production Rate ◽  
Rhodobacter Sphaeroides ◽  
Coupled System ◽  
Purple Membrane ◽  
Halobacterium Salinarum ◽  
Control Group ◽  
Hydrogen Production Rate ◽  
Production Of Hydrogen ◽  
The Impact

Abstract Purpose This study utilized the principle that the bacteriorhodopsin (BR) produced by Halobacterium salinarum could increase the hydrogen production of Rhodobacter sphaeroides. H. salinarum are co-cultured with R. sphaeroides to determine the impact of purple membrane fragments (PM) on R. sphaeroides and improve its hydrogen production capacity. Methods In this study, low-salinity in 14 % NaCl domesticates H salinarum. Then, 0–160 nmol of different concentration gradient groups of bacteriorhodopsin (BR) and R. sphaeroides was co-cultivated, and the hydrogen production and pH are measured; then, R. sphaeroides and immobilized BR of different concentrations are used to produce hydrogen to detect the amount of hydrogen. Two-chamber microbial hydrogen production system with proton exchange membrane-assisted proton flow was established, and the system was operated. As additional electricity added under 0.3 V, the hydrogen production rate increased with voltages in the coupled system. Results H salinarum can still grow well after low salt in 14% NaCl domestication. When the BR concentration is 80 nmol, the highest hydrogen production reached 217 mL per hour. Both immobilized PC (packed cells) and immobilized PM (purple membrane) of H. salinarum could promote hydrogen production of R. sphaeroides to some extent. The highest production of hydrogen was obtained by the coupled system with 40 nmol BR of immobilized PC, which increased from 127 to 232 mL, and the maximum H2 production rate was 18.2 mL−1 h−1 L culture. In the 192 h experiment time, when the potential is 0.3 V, the hydrogen production amount can reach 920 mL, which is 50.3% higher than the control group. Conclusions The stability of the system greatly improved after PC was immobilized, and the time for hydrogen production of R. sphaeroides significantly extended on same condition. As additional electricity added under 0.3 V, the hydrogen production rate increased with voltages in the coupled system. These results are helpful to build a hydrogen production-coupled system by nitrogenase of R. sphaeroides and proton pump of H. salinarum. Graphical abstract

Nonaqueous synthesis of TiO2–carbon hybrid nanomaterials with enhanced stable photocatalytic hydrogen production activity

2015 ◽  
Vol 3 (18) ◽  
pp. 10060-10068 ◽  
Author(s):  
Yijun Yang ◽  
Ye Yao ◽  
Liu He ◽  
Yeteng Zhong ◽  
Ying Ma ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Water Splitting ◽  
Hybrid Nanomaterials ◽  
Photocatalytic Hydrogen Production ◽  
Production Activity ◽  
Nonaqueous Synthesis

Enhanced and stable photocatalytic activity upon water splitting was demonstrated in a series of TiO2–carbon hybrid nanomaterials, which were derived from oleylamine wrapped ultrathin TiO2 nanosheets.

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